Leon The Professional (1994)

Mathilda is a twelve-year old New York girl living a tough life with her half-family. Her father stores drugs for a corrupt DEA agent Norman Stansfield. One day, Stansfield and his team take revenge on her father for stretching the drugs a little, so he murders the whole family. Only Mathilda, who was out shopping, survives by finding shelter in her neighbor Léon’s apartment, so she doesn’t get killed herself. When she finds out that Leon is a hit man or “cleaner” as he calls it she tries to seek his help in taking revenge for her little brother. Soon enough he’s teaching her how to handle weapons and become a professional hit man. Despite that Léon serves as a father and friend to Mathilda. This film is absolutely amazing, with great performances (especially Natalie Portman in her debut role) and intense action it's truly a masterpiece. Starring Jean Reno, Gary Oldman, Natalie Portman, Danny Aiello 9/10